American airlines has the following hubs and focus cities:
Hubs: Chicago O'Hare (ORD) - Dallas-Fort Worth (DFW) - Miami international airport (MIA)
Focus cities:
New York John F. Kennedy (JFK) - New York Laguardia airport (LGA)
Boston Logan airport (BOS)
Los Angeles international airport (LAX)
St.-Louis
San Juan (Puerto Rico)
